/* ─────────────────────────────────────────
   css/nav.css
───────────────────────────────────────── */

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px var(--section-px);
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  transition: background var(--transition-slow), padding var(--transition-slow), border-color var(--transition-slow);
}

.nav.scrolled {
  background: rgba(250, 244, 239, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 16px var(--section-px);
  border-bottom: 0.5px solid var(--mist);
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--charcoal);
}

.nav__links {
  display: flex;
  gap: 40px;
}

.nav__links a {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--charcoal);
  opacity: 0.55;
  font-weight: 400;
  transition: opacity var(--transition-fast);
}
.nav__links a:hover { opacity: 1; }

/* Mobile */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--charcoal);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav__mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--cream);
  z-index: calc(var(--z-nav) - 1);
  padding: 120px var(--section-px) 64px;
}
.nav__mobile-menu.open { display: flex; }
.nav__mobile-menu a {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 300;
  color: var(--charcoal);
  padding: 16px 0;
  border-bottom: 0.5px solid var(--mist);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}
.nav__mobile-menu a:hover { opacity: 1; }

@media (max-width: 768px) {
  .nav__links      { display: none; }
  .nav__hamburger  { display: flex; }
}